(19)

(11)

EP 3 479 043 A1

(12)

(43) Date of publication: 08.05.2019 Bulletin 2019/19 (21) Application number: 18730881.2 (22) Date of filing: 16.04.2018

(51) International Patent Classification (IPC):  F28D 1/04(2006.01) F28F 9/02(2006.01) F28D 1/047(2006.01) F28D 20/02(2006.01) (86) International application number: PCT/PL2018/000039 (87) International publication number: WO 2018/199783 (01.11.2018 Gazette 2018/44)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 24.04.2017 PL 42139317 30.03.2018 PL 42509818 (71) Applicant: Mar-Bud Spólka Z Ograniczona Odpowiedzialnoscia 03-262 Warszawa (PL)	(72) Inventors: MlLA, Miroslaw 41-902 Bytom (PL) SOCZEWKA, Jan 08-110 Siedlce (PL) (74) Representative: Bartula-Toch, Marta  Stanislawa Moniuszki 26/A 31-523 Krakow 31-523 Krakow (PL)